Originally Posted by
superj
i will check that out.
i spoke to a guy at the local bike shop that has been riding for about 30 years and he said its very possible that when the tire was aired up, the person airing it up was pushing the valve stem out by pushing on the tire so that they could get the nozzle to seat and that 1... maybe they pushed it out enough that it allowed the tube to get under the ends of the tire and it pushed the tire up enough that 2...with centrifugal force pulling the tire outward, it pulled enough that the tire popped off the rim.
this sounds logical to me because 3...when i put the new tube in the rim, the area around the valve stem keeps being pushed out of the rim and i couldn't get it to seat evenly around the rim. i thought it was just a cheap tire but it appears it could just be an improper way of airing the tube up. i will find out today because i am going to deflate both rims, 4...check out that piece on the inside of the rim, and then air the tires back up using a hand pump instead of my compressor.
1. Either you did not understand what he was saying or he is inaccurate. Pushing down on the tire will not make the tube go under the tire beads (not "ends of the tire") if the tire is initially mounted properly.
2. Centrifugal force has nothing to do with the tire seating or blowing off - no effect at all.
3. You need to push the valve up into the tire until the valve reinforcement is completely inside the tire, then press the tire down to the rim. Then you can pull the valve back out to its proper position.
4. You don't need to "check out" the
rim strip (why use "piece inside the rim" when you have the right term available?). It needs to be replaced with a narrower rubber rim strip or good rim tape.